Calculate the mass per day (kg/d) of lime (Ca(OH)2) that will be required to precipitate phosphorus in a wastewater with 6.5 mg P/L. The wastewater flow rate is 10,000 m3 /d and the goal effluent P concentration is 0.1 mg P/L. Assume complete dissociation of lime in the wastewater and that the precipitation reaction proceeds at 100% efficiency according to the stoichiometric reaction below.
102+ +6P 3− +2H− ↔ (P ) (H) (s)

Ammonia and oxygen react to form nitrogen monoxide and water, like this: 4nh3 (g) + 5o2 (g) → 4no (g) + 6h2o (g) also, a chemist finds that at a certain temperature the equilibrium mixture of ammonia, oxygen, nitrogen monoxide, and water has the following composition: compound pressure at equilibrium nh3 65.1atm o2 31.3atm no 62.7atm h2o 65.8atm compound pressure at equilibrium nh3 65.3 atm o2 7.79 atm no 12.1 atm h2o 65.8 atm calculate the value of the equilibrium constant kp for this reaction. round your answer to 2 significant

What is the percentage of hydrogen in nitrogen trihydride

The activation energy for the reaction no2(g)+co2(g)⟶no(g)+co(g) is ea = 300 kj/mol and the change in enthalpy for the reaction is δh = -100 kj/mol . what is the activation energy for the reverse reaction?